"Pleased to make your acquaintance; I am Tom Marvolo Riddle."
"Hello, Tim."
"It's. Tom."
The Hufflepuff chuckled as she watched the ink fade, who knew annoyance could be so clearly conveyed through penmanship?
"My apologies, Tommy."
"Tom."
"Right; Tommy."
"...how did you come about my diary?"
"How does anyone come about any dark artifact worth owning? I stole it."
"Truly?"
She snorted, clearly no one had ever bothered trolling him before. "Although," she continued eager to see how far she could push him, "is it stealing if the owner didn't know you belonged to her?"
"...yes."
"Oh. Good!"